Sorry to ask the "which way around do the oil pipes go" question again, but....

Which way around do the oil pipes go, is it supply inner and return outer? And are all the M and B series motors the same?

Just wondering as I've seen different connections

Cheers

The inner pipe is the feed and the outer the return...If you look closely you will see 'return' cast into the crankcase just by the connection point...

All M and B Series engines are laid out the same way (post 1938)....

One difference between SV and OHV bikes though, is the rocker feed connections in the return side pipe of the OHV engines...Ian

email (option): ian@wright52.plus.com